https://i.imgur.com/0zttOT0.png
1. Kill the spy then turn back to cap and take the shorter path to mid since I can edge point without the sniper seeing me.
2. Cap mid then run across mid while my roamer bombs the sniper and take the long way to red second.
3. Edge second where the gun can't see us while camping their forward spawn to stop the heavy.
4. Take the long way to last to easily defeat the sentry and medic from the side, capturing the final point and winning the round for Blu.
I hope I won the round, thanks for the puzzle!